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Replace multiple strings of a file

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# 1  
Old 05-27-2014
Replace multiple strings of a file
Hi,

I have an array variable "arr" that reads string from a file "vari.txt". Thus, the array will be of variable length depending how many entries are present in "vari.txt"

I use a for loop to traverse through the array.

vari.txt (in this sample we have 2 entries, but it can have more or less entries i.e it varies)
Code:
hello sorry
yellow green

However, in output.txt i need to replace all "hello" with "sorry" and "yellow" with "green" and save all the changes in a new filename "output_new.txt".

output.txt
Code:
hello, there were two colors yellow and green.

Desired Result:
Code:
sorry, there were two colors green and green

Can you please help.
# 2  
Old 05-27-2014
This is very rough code in python idle

Code:
>>> text="""hello sorry
yellow green
""".splitlines()
>>> mapping = {}
>>> for pair in text:
	(key, val) = pair.split(" ")
	if not key in mapping.keys:
		mapping[key] = val
>>> mapping
{'hello': 'sorry', 'yellow': 'green'}
>>> strr = "hello, there were two colors yellow and green"
>>> for k in mapping.iterkeys():
	strr.replace(k, mapping[k])

'sorry, there were two colors yellow and green'
'hello, there were two colors green and green'
>>>

# 3  
Old 05-27-2014
Error
Quote:
Originally Posted by zedex
This is very rough code in python idle
Sorry !! I don't use python. Need a shell code for

SunOS mymac 5.10 Generic_150400-09 sun4v sparc SUNW,SPARC-Enterprise-T5220
Last edited by mohtashims; 05-27-2014 at 10:49 AM..
# 4  
Old 05-27-2014
With over 300++ posts already, please let's know where exactly you're stuck.....
# 5  
Old 05-27-2014
Quote:
Originally Posted by vgersh99
With over 300++ posts already, please let's know where exactly you're stuck.....
I use a for loop to traverse through the list of string from vari.txt

I am able to use sed command to replace one string and save it in a new file. I then give this new file as an input to sed for the next replacement string.

So, for 4 replace strings i have to create 4 new files. This is what i wish to avoid.

I need all the strings replaced and only one new file to be created.

Any easy way ?
# 6  
Old 05-27-2014
Code:
$ cat vari.txt 
hello sorry
yellow green

Code:
$ cat output.txt 
hello, there were two colors yellow and green.

Code:
$ awk 'FNR==NR{A[$1]=$2;next}{for(i in A)gsub(i,A[i])}1' vari.txt output.txt 
sorry, there were two colors green and green.

Use nawk on sunos
This User Gave Thanks to Akshay Hegde For This Post:
mohtashims
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